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Finding the Fourth Proportional to 256,037.80, 384,248.70 and 131,314.60

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Solution

The fourth proportional to 256,037.80, 384,248.70 and 131,314.60 is: 197,070.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,037.80 : 384,248.70 = 131,314.60 : x
  2. Step 2: Convert to fraction form
    256,037.80/384,248.70 = 131,314.60/x
  3. Step 3: Cross multiply
    256,037.80x = 384,248.70 × 131,314.60
  4. Step 4: Simplify right side
    256,037.80x = 50,457,464,341.02
  5. Step 5: Solve for x
    x = 50,457,464,341.02/256,037.80
  6. Step 6: Final answer
    x = 197,070.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.